Alt text is for accessibility but it doesn't mean that it doesn't affect your rankings. Yes, H1 is for document structure... but it too can affect rankings at most engines.
To answer the OPs question... regardless of whether it's for document structure or SEO, using the SAME H1 (even if it contains a link) on EVERY page of your site is just a bad idea IMO. It implies that ever page is about the same topic - your tag line.
Use a different H1 for each page on your site, to describe the content of that page.
If you want to use your tagline as the link text of your logo image on every page, why not do something like the following in the source:
<div class="logo"><a title="my hover text" href="/">keyword rich tag line</a></div>
and then associate a background image that contains the tagline with the div using CSS something like:
div.logo a {
background:url("../images/logo.png") no-repeat scroll center transparent;
display:block;
yada yada yada;
}
Browsers images turned off will see the tagline as a text link which is equivalent to the images others are seeing with images turned on. Screenreaders will see the text link and read the tagline link to the handicapped user. |
